Carbureter



Patented Oct. 4, |898. H. T. BRADLEY.

CARB U BETER.

(Application led Aug. 17, 1896*.)

(N0 Model.)

tom plate.

NITED STATES PATENT EErcE.

f CARBURETER.

SPECIFICATION forrning'part of Letters Patent No. 611,674, dated October 4, 1898. Application filed August 17, 1896. Serial No. 602,930. (No model.)

T0 @ZZ whom it may concern.-

Be it known that I, HIEAM TILEORD BEAD- LEY, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented certain new and useful Improvements in Oarbureters; and I do hereby declare that the following is a full, clear, and exact description thereof.

This invention relates to a certain new and useful carbureter for use in connection with gas, gasolene, or oil-operated engines; and it Y consists in the arrangement of parts or details of construction,as will be hereinafter fully set forth in the drawings and described and pointed out in the specification.

The object of the invention is to provide a carbureter wherein the oil will travel therethrough in a helical or serpentine pathway and during its entire travel through the carbureter be subjected to the heat from the exhaust of the engine .in order that the air flowing through the carbureter may become fully charged orimpregnated with all possible volatile vapor of the oil, thus permitting use of the poorest grade or crude oil from which to successfully extract the volatile vapors necessary to create an explosive gas.

In order to fully comprehend the invention, reference must be had to the accompanying sheet of drawings, forming a part of this application, wherein- 4 Figure 1 is a vertical sectional view ofthe carbureter. Fig. 2 is a side View in elevation,

vpartly broken away. Fig. 3 is a top plan view of the apparatus; and Fig. 4 is a cross-sectional top plan View taken on line x, Fig. 1.

In the drawings the letter A is used to indicate the cylindrical or other shaped casing of the carbureter, to which'the top A and the bottom plate A2 are connected by the tie-rods B, the upper edge of the casing fitting within the flange ct of the top plate A and the lower edge thereof within the flange a2 of the bot- The bottom plate is preferably cast with the vertical pipe B', which extends centrally through the carbureting-chamber B2, and Yregisters with the central outlet-pipe B3, cast integral with the top plate A'. However, if so desired, the central vertical pipe may be formed separate from the top and bottom plates. Around the said central vertical pipe is cast or formed the helical exhaustpipe C, through which the products of combustin from the engine escape. This exhaust-pipe winds spirally around the central pipe within the carb meting-chamber from its top to its bottom, Fig. 1. The upper face or surface of this exhaust-pipe is made flat and is provided at its outer edge with the raised lip or upwardlyextending flange ce, so as to form a helical passage-way within the carbureting-chamber for the volatile oil."

Through top plate A extends the oil-inlet pipeG and the air-inlet pipe O2, the latter of which is provided with a controlling-cock b, and from the casing A near its bottom extends the outlet pipe C3 for the gas or vaporized air, which pipe connects with the combustion-chamber of the engine. (N ot shown.)

From the engine is run the pipe D, which pipe connects with the lower end of the exhaust-pipe within the carbureting-chamber, the upper end of the said exhaust-pipe communicating with or extending through the exhaust-opening D', formed in the top plate A', Fig. 2.

In order to prevent a too rapid flow of the oil through the helical oil passage-way and to maintain the flowing oil subject to the heat generated by the hot product of combustion owing through ythe exhaust-'pipe for the greatest length of time, there is interposed across the oil passage-way or top of the exhaust-pipe a series of cross-bars b', which bars act as riifles and interrupt the downward flow of the oil by holding-the same in check behind the bars until sufficient oil has accumulated to overflow the interrupting cross bar. These cross -bars are placed a short distance apart throughout the entire length of the oil passage-way.

The oil entering the chamber B2 from the oil-inlet pipe C drops upon the upper face of the exhaust-pipe C and gradually iiows downward in the passage-Way formed therefor the entire length of the said exhaust-pipe. If the engine is ruiming, the hot products of' combustion or hot air therefrom flowing upward through the helical exhaustpipe heat the surface of the said pipe and cause the vaporization of the volatile parts contained in the oil flowing thereover, which volatile vapor commingles or intermixes with the air flowing through the carbureting-chamber, so

IOO

as to form or produce an explosive gas. This gas flows from the carburetingchamber to the combustion-chamber of the engine through the gas-outlet pipe C3. Owing to the crossbars placed in the passage-Way of the oil, its downward flow is considerably retarded and the oil exposed to the heated surface of the exhaust-pipe for a much longer time than if left to flow freely downward. By thus retarding the flow of the oil all the volatile parts will be vaporized therefrom bythe time the oil has traveled the entire length of the helical exhaust-pipe, so that the residue of the oil will flow from the passage-way of the exhaust-pipe into the bottom of the carbureting-chainber in the form of a thick non-volatile oil. This residue is drawn from the carbureting chamber by means of the drippipe In order to secure an initial vaporization of the volatile products of the oil so as to start the engine, a lamp or other heating device is introduced into the lower end of the central pipe B. The heat passing upward through this pipe causes the descending oil to throw out its volatile vapor, so as to create, by intermingling with the flowing air, gas by which to operate the engine. After the engine has started to Work the exhaust therefrom will thereafter serve to volatilize the oil. By my carbu reter, inasmuch as I extract all volatilized products, I am enabled to employ therein the cheapest grade of oil for the running of engines making use of carbureters. In fact, I am enabled to use the crude oil.

In the present case I have described and illustrated the oil passage-way and the exhaust-pipe as being in the forni of a helix, although it will be readily understood that the said oil passage-way and exhaust-pipe may be in the form of a spiral or may be of a serpentine shape.

Having thus described my invention, what I claim as new, and desire to secure protection in by Letters Patent, is

l. In a carbureter, the combina-tion with a carbureting-chainber, an oil-supply, an airsupply, and a gas-outlet, of an open-ended pipe arranged Within said casing, a pipe through which a heating medium is adapted to pass, arranged helically around said openended pipe and formed integrally therewith, the walls of the latter forming the inner Wall of the helical pipe, and an upwardly-extending flange formed integrally on the upper outer edge of the helical pipe, and forming in conjunction with the upper wall of the helical pipe and the open-ended pipe a trough for the oil, substantially as described.

2. In a carbureter, the combination with a carbureting-chamber, an oil-supply, an airsupply and a gas-outlet, of an open-ended pipe arranged within said casing, a pipe through which a heating medium is adapted to pass arranged Within said casing helically around said open-ended pipe, the Walls of the latter constituting the inner Wall of the said helical pipe, and an upwardly-extending ange on the upper outer edge of the helical pipe and forming in connection with the upper wall of the helical pipe and the Walls of the open-ended pipe a trough for the oil, substantially as described.

3. In a carbureter, the combination of a cylindrical casing, a cap for one end thereof, an open-ended pipe secured thereto and extending within said casing, a cap for the opposite end of the casing having an opening registering with said pipe, an oil-supply pipe, an air-supply pipe, a gas-outlet pipe, and a pipe through which a heating medium is adapted to pass arranged within said casing helically around said open-ended pipe and provided on its upper side with an oil passageway, substantially as described.

In testimony whereof I affix my signature, in presence of two Witnesses, this 7th day of August, 1896.

IIIRAM TILFORD BRADLEY.

Witnesses:

LEE D. CRAIG, N. A. AGREE. 

